以纯铜为研究对象,通过添加镍粉进行表面机械研磨(SMAT)处理.用光学显微镜(OM)、X射线衍射分析仪(XRD)和扫描电镜(SEM)对SMAT处理后样品的组织及成分变化进行分析.采用X射线能量色散谱分析方法(EDS)分析Ni元素在合金层中的分布与含量.结果表明,纯铜表面出现了明显的分层现象,同时铜镍发生互扩散有铜镍合金形成.处理120 min后形成厚度为35μm铜镍合金层,而240 min厚度则达到55μm,并且合金层与基体变形层结合紧密.由于弹丸的冲击产生应力应变和大量储存能,使得原子的跳动频率增加同时降低了扩散激活能,实现铜镍在较低温度下快速互扩散.
参考文献
| [1] | K. Lu;J. Lu .Nanostructured surface layer on metallic materials induced by surface mechanical attrition treatment[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(0):38-45. |
| [2] | N. R. Tao;Z. B. Wang;W. P. Tong;M. L. Sui;J. Lu;K. Lu .An investigation of surface nanocrystallization mechanism in Fe induced by surface mechanical attrition treatment[J].Acta materialia,2002(18):4603-4616. |
| [3] | G. Liu;S.C. Wang;X.F. Lou .LOW CARBON STEEL WITH NANOSTRUCTURED SURFACE LAYER INDUCED BY HIGH-ENERGY SHOT PEENING[J].Scripta materialia,2001(8-9):1791-1795. |
| [4] | Tong W P;Tao N R;Wang Z B et al.Nitriding iron at lower temperatures[J].Science and Technology,2003,299:686-688. |
| [5] | Zhu K Y;Brisset F et al.Nanostructure formation mechanism of α-titanium using SMAT[J].Acta Materialia,2004,52(14):4101-4110. |
| [6] | X.Wu;N. Tao;Y. Hong .Microstructure and evolution of mechanically-induced ultrafine grain in surface layer of AL-alloy subjected to USSP[J].Acta materialia,2002(8):2075-2084. |
| [7] | K. Wang;N.R. Tao;G. Liu .Plastic strain-Induced grain refinement at the nanometer scale in copper[J].Acta materialia,2006(19):5281-5291. |
| [8] | Ying-hui Wei;Bao-sheng Liu;Li-feng Hou .Characterization and properties of nanocrystalline surface layer in Mg alloy induced by surface mechanical attrition treatment[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(2):336-342. |
| [9] | 侯利锋,卫英慧,刘宝胜,许并社.AZ91D镁合金表面机械研磨处理后显微结构研究[J].稀有金属材料与工程,2008(03):530-533. |
| [10] | 钟宁,徐山清,闵娜,温春生,金学军,戎咏华.共析钢经表面研磨处理后微观组织的演化[J].上海交通大学学报,2006(10):1735-1738,1742. |
| [11] | Li W;Wang X D;Meng Q P et al.Interdiffusion of alloying elements in nanocrystalline Fe-30 wt.％ Ni alloy during surface mechanical attrition treatment and its effect on α → γ transformation[J].Scripta Materialia,2008,59(03):344-347. |
| [12] | Wu X;Tao N;Hong Y;Liu G;Xu B;Lu J;Lu K .Strain-induced grain refinement of cobalt during surface mechanical attrition treatment[J].Acta materialia,2005(3):681-691. |
| [13] | Jiangwei Ren;Aidang Shan;Junbao Zhang .Surface nanocrystallization of Ni_3Al by surface mechanical attrition treatment[J].Materials Letters,2006(17/18):2076-2079. |
| [14] | 吕爱强,张洋,李瑛,刘刚,刘春明.表面纳米化对316L不锈钢性能的影响[J].材料研究学报,2005(02):118-124. |
| [15] | 徐可为;胡奈赛;何家文 .纯铜和黄铜喷丸强化的组织效应[J].金属学报,1994,30(01):29-33. |
| [16] | 卫英慧,毕海香,侯利锋,王国栋,许并社.纳米晶铜中离子注入碳后的组织结构研究[J].太原理工大学学报,2008(06):543-547. |
| [17] | 林万明,卫英慧,杜华云,毕海香,侯利锋.纯铜表面纳米化对镍扩散的影响[J].金属热处理,2009(11):14-17. |
| [18] | 王国栋 .Cu纳米晶中的溶质扩散行为研究[D].太原理工大学,2006. |
| [19] | 杜华云,刘增庆,卫英慧,林万明,侯利锋,许并社.纯铁表面机械研磨Fe-Ni合金化方法的研究[J].太原理工大学学报,2009(06):582-585. |
| [20] | 刘宝胜 .镁合金表面纳米化显微结构和晶粒细化机理研究[D].太原理工大学,2007. |
| [21] | R.B.Schwarz .Microscopic model for mechanical alloying[J].Materials Science Forum,1998(Pt.2):665-674. |
| [22] | X. Sauvage;F. Wetscher;P. Pareige .Mechanical alloying of Cu and Fe induced by severe plastic deformation of a Cu-Fe composite[J].Acta materialia,2005(7):2127-2135. |
| [23] | 林万明,钱玉水,侯利锋,杜华云,卫英慧.纯铜表面机械沉积镍及其对组织结构和性能的影响[J].功能材料,2012(14):1927-1930. |
| [24] | Z.B. Wang;J. Lu;K. Lu .Chromizing behaviors of a low carbon steel processed by means of surface mechanical attrition treatment[J].Acta materialia,2005(7):2081-2089. |
| [25] | Chen Y;Schuh CA .Geometric considerations for diffusion in polycrystalline solids[J].Journal of Applied Physics,2007(6):63524-1-63524-12-0. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%